Learn about the ocean, explore marine species, get ocean facts, and more.

The ocean (yes, there is only one) is essential to life on Earth. It covers more than 70% of our planet and holds 96.5% of all water. It also regulates our climate, generates half of Earth's oxygen, and is home to millions of species. Explore the resources below to learn more about our ocean and its inhabitants, from sea turtles, to whales, sharks, and beyond.